tabulator

noun

Etymology: Etymology tree English tabulate Old French -eorbor. Middle English -our Proto-Indo-European *-tōr Proto-Italic *-tōr Latin -torlbor. English -or English tabulator From tabulate + -or.

1. A person who counts or tabulates things.
2. The mechanism on a typewriter that sets the position of columns and borders.
3. A tab character.

   “You can put a tabulator in all those places where a space is allowed. A tabulator character corresponds to, for example, 4 spaces in the program editor.”

4. An early data processing machine that produces printed lists and totals from data on punched cards.